Have you ruled out Proxmox firewall issues? By turning off the Proxmox firewall?
Yes. I also use VirtualBox on a linux host with no firewall and the outcome is the same. All has been described above, multiple times.
No idea then ā¦ it appears to work for everyone else that said i did try to mirror your system and install the software you are trying to install and it worked fineā¦ but whoās to say my tests are valid ?
Indeed, this is no longer a professional operation. Being semi retired anāall. None-the-less, I do have some high end $eriou$$$ server hardware kicking around, with one sad, wrinkled (read seasoned) burned out nerd posing as the owner/current custodian.
Also - it could be the provider yanking my chain too - all is possible at this stage. This has now gone into Twilight Zone territory me thinks.
I just installed Ubuntu on a VM at home. No real DNS, aborted the Virtual Server installation that stalled at validating SSL, cuz well, it wasnāt gonna happen. So half axed install of VM and the virtual server and the WP script still worked on my wonky, half setup domain.
There is clearly somethingās wrong with SSL/TLS handshake, as connection gets unexpectedly closed.
Do you have ca-certificates package installed and updated? Is the time on the system set correctly?
Hmm, I have not installed any certificate software or certificates on the container when it was created, nor have I installed them on the Virtualbox instance of Ubuntu Server. If they are installed then it has either been installed by default or by Virtualmin in the installation process. Checking on if it was installed and yes it is (see below)
root@vmin:~# timedatectl set-timezone Europe/London
root@vmin:~# apt install ca-certificates
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
ca-certificates is already the newest version (20230311ubuntu0.22.04.1).
The following packages were automatically installed and are no longer required:
libc-ares2 libevent-2.1-7 libevent-core-2.1-7 libevent-pthreads-2.1-7 libfuse2 torsocks
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@vmin:~#
cURL error 56 - No change
What would changing the protocol from https to http do if used with my previous example?
I think this is down to his router or his provider.
I think trying a VPN may be next.
I made the change and rebooted - making sure that this time webmin/virtualmin was reloaded without any doubts.
Erm, yeah, kinda strange. Llia suggested to use a VPN - through TOR, which I installed on the virtual server, but to no effect. Now - it could be that in my senile years or through inexperience - I forgot to tweek something relevant in the TOR config file, but it made no difference. I could not easily determine whether traffic was routed through the VPN or not.
Further, it still baffles me when the same command in a terminal succeeds where as in the install script - it does not.
The error above from the wp CLI command indicated it was unhappy with the domain name in the email address you used. Not Virtualmin. You keep pointing at Virtualmin, when everything I see so far is unrelated to Virtualmin.
Iām not pointing this out to be defensive, Iāve trying to help you look for the actual problems rather than assuming everything is a Virtualmin bug.
Yes, the same here - who is to say?
Itās not a complex setup to mirror, 1 proxmox, 1 debian or ubuntu container, 1 NIC connected directly to the router and everything is a fresh install, no tweeks, no firewall, no DNS servers or UBound in between, the only difference is my internet provider.
Hi, that was a complete fluke that it installed to that pointā¦ retrying on another instance failed.
No need to be defensiveā¦ Iāve already ruled out Virtualmin as the suspect because I tried a pre-made turnkey linux container which does not use virtualmin.
It is strange though that in all instances, the command works in a terminal but not in the script. We are just now clutching at straws. Sadly though, whatever it is that is ultimately causing the issue, also affects Virtualmin too as well as the turnkey solution. Thatās the rub and I love Virtualmin - so please, donāt get me wrong. I would dearly love to sort this problem and continue my life long path to oblivion with Virtualmin at my side.
I am grateful for all of the help and suggestions - truly. So rest easy Joe.
Something is messing with your network connection. It isnāt enough to install the tor package; you need to reroute all local traffic through Tor
There are other ways to do it. Furthermore, you could try strace or tcpdump to see whatās really happening. There are different moving parts, so you need to be patient, taking educated guesses.
Perhaps, you could just change your ISP.
Yeas, itās worth looking into - but my poorly head hurts after the head beatings against the wall. So maybe tomorrow. Groundhog day.
Yes, agreed, Iāll get right on it tomorrow after a few G&Tās
Hmmm, not possible, but I can use a 4G connection to see if that would work.
Another task addedā¦ 
Thanks for your help Llia - much appreciated.
Installing tor seems like a wildly unrelated thing to do. tor is for routing around intentional censorship and insuring privacy, itās not for solving intermittent network connectivity problems! It will just mask those problems and move them around and make them harder to solve.
I donāt think installing tor is going to do anything useful for you. You have network problems. You need to solve those network problems.
It depends on the origin of the network problem. I suggested using it just for testing purposes.
Another case of a personal router setup methinks or comms provider maybe.
As everything seems to work for others I think we are wandering round a little.